Air-pressure lubricator.



L. G. O'DONNELL. AIR PRESSURE LUBRICATOR.

APPLICATION FILED MAY 4, I9I5.

Patented Jan. 11, 1916.

unrTnn sTa TnrrT cierren.

LEWIS G. ODONNELL, OF COSCOB, CONNECTICUT.

AIRJPRESSURE LUBRICATOR.

To all whom it may concern:

Be it known that l, Lewis Gr. ODoNNELL, a citizen of the United States, residing at Coscob, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Air-Pressure Lubricators, of which the following is a speciication.

rllhis invention relates tov air pressure lubricators, that is to say, it belongs in the class with devices intended to serve oil to contrivances of any description, tube-cleaners used to remove the scale from steamboiler tubes, cutting and riveting tools of all kinds, wherein the working fluid employed is compressed air.

For the purpose of explaining this invention, an ordinary tube cleaner is shown. lt is necessarily connected with the air service pipe by a flexible hose pipe, because it must be freely moved about and turned into various positions. rlhe hose pipe for carrying the air to the cleaner is customarily et rubber material. @il having an injurious action upon rubber, theair-carrying tube cannot at the same time aord a passage for oil. lt is not desired that there should be more than one pipe connected with the cleaner or tool. lf the oil were served in an oilcarrying tube separate from the rubber aircarrying pipe or hose, the arrangement would be very inconvenient even if the two pipes were attached to each other.

lt is the purpose, therefore, of this invention to produce a compressed air lubricator having parts of special construction and arrangement, and in which the air-carrying pipe is as usual of rubber, and the oil-carrying tube is of metal extending within the rubber pipe.

ln the Vaccompanying drawings, throughout which the same letter is used to refer to the same part, Figure l represents a. vertical section through the lT-connection and various pipes and tubes, and shows the oil-feedlng device in position and all parts assemf bled.4 Fig. 2 is a vertical section of the noz-` Zle on the end of the metal oil-carrying tube.4 Fig. 3 is a top view of an annular member having passes through it by way of which the air enters the air-carrying pipe. The lower surface of the member a'ords a seat for the air check valve that controls thepassages in the said member. Fig. l is a side view of the manner in which this invention is connected up for use, 'and Specification of Letters Patent.

Patented dan.. ill,

Application filed May d, 1915. Serial No. 25,819.

shows an air-serving pipe by which the cornpressed air reaches this invention, and an air-carrying pipe by which the air travels to the cleaner or tool, and which contains the oil-carrying tube. Fig. 5 is a pipecoupling attached to the end oit the aircarrying pipe. Fig. 6 is a top plan view of the pipe-coupling shown in Fig. 5.

ln all the figures excepting' the fourth, f.

tion B. ylhe connection B is in connected by an air-carrying pipe h with a pipe-coupling or the like C, which is connected up with a tube-cleaner l) having the cutters d'.

As best illustrated in Fig. l, an oil-iced ing device lil is arranged vertically above the "l-connection B, and is in communication therewith. A small tube e connects the cil feeding device with the air-serving pipe a', in order that the air pressure may be the same in that device as elsewhere. The oil feeding device may advantageously have the sight ieed l?, in the throat by which it is placed in communication with the u"lm-cont nection. lWithin the connection oil tube ,t extends for a distance downwardly, and is arranged to drop oil into a funnel G beneath it. rlhe tube g ot the funnel et:-

tends downwardly, and is joined by the union H to a metal oil-carrying tube la., er;n tending within the rubber air-carrying pipe as illustrated.

The pipe t, which, as stated, is oi' rubber, has clamped to it a metal mouth-piece or terminal il, and a union j connects the terminal J with the llconnection B, clamping between them an annular member K, which is provided with air passages 7c extending through it in the direction of its axis and between its center and rim. The lower surface of the member lh affords a valve seat for a check valve L, yieldingly seated by means of the-spring M acting between the valve and a collar fm, on the fixed stem or tube g of the funnel G.

Now considering Fig. 5, there will be seen. a screw N that passes inwardly through the movably secured within the pipe-coupling. l

,In Fig. 2 is illustrated that the nozzle O is provided with a check'valve P opening outwardly, and yieldingly seated by means of the sprlng Q In furtherance of the explanation of the mode of operation of this invention, let it be assumed that the parts have been assembled and connected up as set out in Fig. 4c, and Fig. 1. The T-connection B andthe oil cup E are arranged vertically. Air from pipe a will unseat valve L and pass into the tube cleaner D. At the same time air enters the oil cup E byway*of the small tube e, equalizing the pressures and enabling the oil to feed drop by drop in the usual manner. l The oil falls into the funnel G and is carried along by the air through the tube 7L, and driven out of the nozzle 0 into the mechanismv of the tube cleaner D. It is desirable if practicable thatl no'oil shall reach the interior of the pipe B. To avoid that condition, the nozzle O is vprovided vexplaine the mode of with the spring-seated check valve P. lIf

it were not for the valve P, the oil would drip from the nozzle when the cleaner D happened to be lowered, some oil always remaining in the tube l1., even after the feed ofthe oil has been shut 0H. 'Ihe valve P keeps the remaining oil in the tube h for future use.

mode of 'operation of this invention, it should be stated that the check valve L, described as located at the entrance to the aircarrying hose or pipe b, is intended to and does partially obstruct the flow of air at the outset into that hose. Air pressure must overcome the spring M before the air can flow into the hose b. Meantime, air is flowing freely through the unobstructed'oil-'carrying tube lz., taking the oil with 1t lnto-the cleaner D, and insuring full lubrlcatlon thereof whenever air is served to the cleaner D 'and -practically independent of the amount of air consumed by the cleaner f or its operation, within limits varying considerably.

It will be understood that the, spring Q shown in Fig. 2, which holds the ball valve P vto itsv seat, is not intended' to resist thepassageof the air at all, and it is, therefore, made only strong enough to fully seat 'the ball valve when no airis passing. I-Iavin now described this invention and its operation, what I claim is .9111. In an air pressure lubricator,. the com ,bination lwithan air-service dpipe, of a T- .'connection securedto the sai ip e,'an oilfeeding device arranged vertica y above :the said connection 1u commumcatlon therewith,

an air tube connecting the said device and the zur-service pipe, a funnel located in the said connection and arranged to receive the oil from the oil-feeding device, a rubber airmunication therewith, an air tube connecting the said device and the said air-service pipe, a funnel located in the said connection and arranged to receive the oil from the oilfeeding device, a rubber air-carrying pipe connected with the said T-connection and having a pipe coupling at its other end, a spring-seated check valve in the lsaid connection opening downwardly and controlling the passage of air into the said air-carrying pipe, a metal oil-carrying tube extend ing within the rubberair-carrying pipe and havin a nozzle at its end arranged within the sald pipe-coupling, a spring-seated check valve in the said nozzle opening outwardly, and lmeans Afor removably securing the nozzle within the said pipe-coupling. In-connection with the explanation of the carrying pipe connected with the said T- connection and having a pipe-coupling at its other end, a metal oil-carrying tube extending within the said .air-carrying pipe and having a nozzle at its end arranged within the said pipe-coupling, vmeans for securing the said nozzle removably within the said pipe-coupling, and means arranged within the saidT-connection for directmg the oil fromv the said oil-feedin device into the said metal oil-carrying tu e.

4. In an air pressure lubricator, the combination with an air servicegpipe, of. a T- connection, an oil-feeding' device arranged vertically abovethe said connection in communication therewith, means for connecting the said device with the said air-service pipe, a rubber air-carrying pipe'connected with the said T-connection and having a pipecoupling at its other end, a sprlng-seated check valve within the said connectionopening downwardly and controllingthe passage of air into the said air-carrying pipe, a

metal oil-carrying tube extending Within the rubber air-carrying pipe and having a nozzle at its end arranged Within the said pipe-coupling, means for securing the said nozzle removably Within the said pipe-coupling, a spring-seated check valve Within the said nozzle opening outwardly, and means arranged Within the said T-connection for directing the oil from the oil-feeding device into the said metal oil-carrying tube.

5. In an air pressure lubricator, the combination with an air-service pipe, of a T- connection7 an oil-feeding device in communication with the said connection, means for connecting the said device With the said airservice pipe, the said device being constructed to deliver oil into the'said connection, a

rubber air-carrying pipe connected with the said T-connection and having a pipe-coupling at its other end, a metal oil-carrying tube extending Within the said air-carrying pipe and having a nozzle at its end arranged Within the said pipe-coupling, means for securing the said nozzle removably Within the said pipe-coupling, and means arranged Within the said 'lV-connection for directing the oil from the said oil-feeding device into the said metal oil-carrying tube.

In testimony whereof I aflix my signature in presence of tWo Witnesses.

LEWIS GRANT ODONNELL. Witnesses:

JOHN H. OLMSTEAD, DANIEL F. JEssUP. 

